A local cleaning contractor called us in to work on the Terracotta tiled floors at a council building in Amersham. The Terracotta had not been deep cleaned and resealed for about ten years and the sealer had worn off leaving the tile vulnerable to dirt becoming ingrained in the pores of the tile. The grout had also suffered the same fate and had almost gone black in many areas.
This is a common problem with Terracotta which is quite porous and once those pores become ingrained with dirt the tile becomes difficult to clean effectively. The solution is to seal the tile however sealers wear off over time and this was basically the problem.
After discussing the issues we agreed on a plan of action to deep clean the Terracotta tile and grout and then re-seal to protect it. Due to the busy nature of the building we agreed to do the work between Christmas and New Year when we knew the building would be empty.
Cleaning Old Terracotta Floor Tiles
We started by applying a strong dilution of Tile Doctor Oxy-Gel which is a strong tile cleaning product that being in a gel form ensures it sits on the tile for longer, giving it a longer effective dwell time so it can really eat into and loose the dirt. After approximately twenty minutes the gel was scrubbed into the tile with a black scrubbing pad fitted to a rotary machine. This broke down most of the dirt and removed any remaining sealer. Once the whole floor had been treated in this manner it was rinsed thoroughly with water which was then extracted using a wet vacuum.
With the soiled cleaning solution removed I could see the next step would be to spot clean stubborn staining and clean the grout. For this task I used a strong dilution of Tile Doctor Pro-Clean scrubbing it in by hand using stiff brushes and aided with a hand-held steamer to help treat the stubborn staining. Once done the floor was given a final rinse and then as much moisture as possible removed with the wet vacuum.
Sealing Old Terracotta Floor Tiles
We then left the floor to dry off completely and came back a couple of days later to seal the Terracotta tile.
I mentioned earlier that Terracotta is porous; in fact it’s probably the most porous material I deal with, so to fully seal the floor I had to apply eight coats of Tile Doctor Seal and Go which will provide complete and long lasting protection against staining and dirt. Seal and Go also adds an appealing satin sheen to the tile and the new seal will make it much easier to clean in future.
The floor tile and grout now look much healthier and I’m sure the council will be very impressed when they go back to work after the holidays.
Happy New Year…
Source: Terracotta Tile Cleaning and Renovation Service in Amersham, Buckinghamshire